Batrider?
That was a cool run because I managed to keep the medal chain all the way from stage 1 to 6, up to this cap.
Unfortunately I fucked up big time first at stage 5 by missing one extend(it spawned inside the goddamn tunnels), and then I just moved in the wrong direction at stage 6 during the midboss. Could have done it otherwise with the 4.5m extend + the 6m extend at stage 7.